86. Solving a chemistry problem

11. The chemical reaction proceeds under the conditions indicated in the table. Using the collision theory, determine the kinetic characteristic of the reaction that is absent in the corresponding variant.
Option number Reaction T, K Rate constant k Activation energy Е, kJ/mol Steric factor, р Diameter of reacting particles, σav, cm Answer
11 2N2O → 2NO O2 627 1.81*10-3 cm3/(mol*s) 111.2 0.019? 3.12•10-8 cm